The best approach to design state where we need SharedState

[pilotns]

Hi, everybody.. I apologize in advance for my English, but I will try to describe my case.
MainFeature contains an array of NumbersCollectionFeature:

struct MainFeature: Reducer {
    struct State: Equatable {
        var collections: IdentifiedArrayOf<NumbersCollectionFeature.State> = []
    }
    
    enum Action: Equatable {
        case collection(id: NumbersCollectionFeature.State.ID, action: NumbersCollectionFeature.Action)
    }
    
    var body: some ReducerOf<Self> {
        Reduce { state, action in
            return .none
        }
        .forEach(\.collections, action: /Action.collection(id:action:)) {
            NumbersCollectionFeature()
        }
    }
}

NumbersCollectionFeature in turn contains an array of NumberFeature:

struct NumbersCollectionFeature: Reducer {
    struct State: Equatable, Identifiable {
        var id = UUID()
        var numbers: IdentifiedArrayOf<NumberFeature.State> = []
    }
    
    enum Action: Equatable {
        case number(id: NumberFeature.State.ID, action: NumberFeature.Action)
    }
    
    var body: some ReducerOf<Self> {
        Reduce { state, action in
            return .none
        }
        .forEach(\.numbers, action: /Action.number(id:action:)) {
            NumberFeature()
        }
    }
}

NumberFeature is a simple feature:

struct NumberFeature: Reducer {
    struct State: Equatable, Identifiable {
        let id = UUID()
        var number: Int
        @BindingState var isFavorite = false
    }
    
    enum Action: Equatable, BindableAction {
        case binding(BindingAction<State>)
    }
    
    var body: some ReducerOf<Self> {
        BindingReducer()
        
        Reduce { state, action in
            switch action {
            case .binding:
                return .none
            }
        }
    }
}

And then in MainFeature I need to access all favourite NumberFeatures from all collections and be able toggle off isFavorite and propagate the action back to top.

And here I'm completely confused. I will be appreciated for any help.